baber/WOPTO huggingface dataset:
Patent GB-1456125-A (GB)
Title: Exercising equipment
IPC: A63B21/008
Filed: 1974-05-07
Abstract: 1456125 Exercising apparatus H R EVANS 7 May 1974 19944/74 Heading A6M An exercising apparatus includes an upstanding tube 11 containing water or other liquid, a body 25 incorporating a valve member 29, and means whereby in use the body 25 is suspended in the liquid in the tube 11 and can be pulled upwardly by a person exercising, the valve member 29 acting to apply a restraining force against upward movement of the body but allowing downward movement of the body under gravity. The tube 11 is supported on a base 10 and at its upper end carries an arm 12 extending across the top of the tube where it supports two inner pulleys 13, 14. Another pair of pulleys 15, 16 are held in bridges 17, 18 releasably secured to the ends of the arm 12. A wire or string 19, fitted with hand grips 20, 21, passes over all four pulleys and is looped downwards inside the tube 11 over another pulley 23 from which the body 25 is suspended by means of a bridge 24. The body 25 comprises a tubular element 26 which is attached to a projecting stem 27 by a transverse bar 28. The stem 27 is releasably secured to the bridge 24 and slidably supports the apertured valve member 29 which seats on the upper end of the element 26 as the body 25 is raised but moves out of contact when the body falls under gravity. Further pulley bridges 33, 34, 35 may be releasably secured to the base 10 and the line 19 as shown, a continuous wire or string 36 passing over the corresponding pulleys so that foot and leg muscles may be exercised by utilising a pad 37 attached to the line 36. A back rest 38 can be secured to the tube 11.
Patent GB-706643-A (GB)
Title: Improvements in or relating to thermo-couple sheaths
IPC: G01K1/10
Filed: 1951-08-25
Abstract: 706,643. Thermometer cases. BERRY, H. T. Aug. 7, 1952 (Aug. 25, 1951]; No. 20072/51. Drawings to Specification. Class 97(3) A sheath for a thermo-couple comprises a metal tube with an external coating of nitrous enamel. The tube may be straight and have one end closed or may be a U-tube. It may be of mild or alloy steel or copper, and the coating may comprise one or more layers.
Patent GB-1092637-A (GB)
Title: Silicon nitride products
Inventor: COE ROGER FRANK
IPC: C01B21/068
Filed: 1964-05-14
Abstract: A silicon nitride product is prepared by heating powdered silicon in an atmosphere of nitrogen and 5 to 25% by weight hydrogen, at a temperature not exceeding 1300 DEG  C., to form powdered silicon nitride entirely in its a -phase, mixing with this a magnesium compound and pressing the resulting mixture to a predetermined shape at a temperature not exceeding 1650 DEG  C. to produce a solid body, the magnesium compound being chosen so that at this temperature it forms MgO which is present in the proportions 0.25 to 1% by weight of the silicon nitride.  The magnesium compound may be magnesium oxide or carbonate and the pressing may be carried out between graphite dies which are coated with a substance which inhibits combination of the silicon nitride powder with the graphite, e.g. boron nitride.
Patent GB-280621-A (GB)
Title: Improvements relating to hinges
IPC: E05D11/00
Filed: 1926-08-14
Abstract: 280,621. Steers, E., (Steers, H. L.). Aug. 14, 1926. Stays.-Doors and other hinged members are secured in an adjusted position by means of a plurality of locking pins, such as M, only one of which is capable engaging at any one time with a seriers of holes G. The pins are carried by a disc D pivotally mounted at E to the disc A and in which are the circumferentially-positioned holes. The pins L, M, N are carried by a lever O and they are so spaced circumferentially that when one pin register with a hole the other pins are out of register with the adjacent holes, as shown in Fig. 3. Springs W are mounted above the pins, and a spring-pressed pin A<1> is provided to engage with one of the recesses B<1>, C<1> of the lever O to secure the pins in a locked or unlocked position. The disc A is secured to the post C by a flange B and the plate D carries an arm E<1> slidably engaged by a bracket G<1> on the door.
Patent GB-1189722-A (GB)
Title: Improvements in or relating to Bistable Circuits
Inventor: CROWTHER GERALD OFFLY
IPC: H03K19/08
Filed: 1967-05-02
Abstract: 1,189,722. Bi-stable circuits. MULLARD Ltd. 2 May, 1967, No. 20190/67. Heading H3T. A bi-stable circuit which at the next clock pulse is set to correspond to the state of an input signal, comprises input gates (e.g. 1, 2 and 3) controlling a cross-coupled type bi-stable circuit 4 and an output gate or buffer 5 connected to the input of the bi-stable circuit, the arrangement being such that the changeover times from 0-1 and 1-0 are equal. When clock and signal pulses at respective terminals C and S are " 1 " the output from 2 and 3 set the buffer 5 to the " 1 " state with a two unit delay represented by that of 3 and 5. The bi-stable circuit 4 will be confirmed in or changed to the " 1 " state and holds the output of 5 at " 1 " when theclock pulse terminates. When the clock is " 1 " and S is " 0 " the outputs from 1 and 2 will be " 0 " and will set 5 to the 0 state with a delay of two units and the bi-stable circuit 4 will become 0 so that the output from 5 remains at 0 when the clock pulse terminates. In Fig. 3 (not shown) additional input terminals (SB and SB) are provided for units 1 and 3 (now labelled B and C) and when these are both set to 1 operation is similar to Fig. 1 but when they are complementary they will allow the circuit only to change to the state corresponding to the SB input to B. In addition independent set and reset terminals are provided for the bistable element (A) and a twin output circuit (E) is provided in place of 5. The output terminals may be used independently or in parallel. Fig. 5 shows a current switching type twin output circuit suitable for use in Fig. 3. Inputs are connected at T 1 -T 3 , and outputs at Q 1  and Q 2 . Diode connected transistor T 7  provides a stabilized reference voltage. Fig. 6 shows a similar but single output circuit. The dotted feedback connection converts it to a bi-stable circuit.
Patent GB-201032-A (GB)
Title: Photographic printing apparatus
IPC: G03B27/04
Filed: 1922-07-24
Abstract: 201,032. Eason, H. R. July 24, 1922. Addition to 174,309. Printing-apparatus.-The registering frame b, claimed in the parent Specification, has one or more templates c, of millboard, or the like, adapted to fit accurately into it, or into one or more of its compartments. The template c has accurate rectangular edges and a plurality of openings d having knife-edges or stops f providing a three-point contact for the negatives e formed thereon. The openings d may be arranged, as shown in Fig. 2, so that when the template is reversed in the frame and impressions are taken in each position, the illustrations intersect, or, as shown in Fig. 6, the openings may be such that by turning the template upside down and end for end a succession of abutting impressions. may be produced on the sensitized surface a.
Patent GB-203985-A (GB)
Abstract: 203,985. Nash, A. W. Feb. 7, 1923. Blowers for open fire-places comprise a centre panel 1, side panels 4 hinged to it, and hinges 8 and the outer beaded edges 9 of the side panels, the projecting ends 6, 7 of the rods forming supporting legs. The rods may slide in the hinges and beads in order to adjust the height of theblower, portions 12 of the hinges 8 being cut away to allow this. The horizontal parts 11 of the rods may be bent outwardly to form handles.
Patent GB-977783-A (GB)
Title: Burned refractory product
IPC: C04B35/03
Filed: 1962-05-28
Abstract: A refractory brick for use in oxygen converters comprises at least 96% by weight of MgO which has been burned and impregnated throughout with uncoked tar or pitch.  The magnesia used in making the brick is obtained synthetically since natural magnesia does not contain sufficient MgO.  The remainder of the brick may comprise silica, iron oxide, alumina and lime. The bricks may be prepared by dead-burning caustic calcined magnesia at at least 2900 DEG  F. incorporating a temporary binder in the material, shaping the resulting product, firing and then immersing the product in liquefied tar or pitch.  The temporary binder may be waste sulphite liquor.  Specifications 892,038, 926,148 and 977,782 are referred to.
Patent GB-471449-A (GB)
Title: Improvements in buoyant swimming devices
IPC: B63C9/08
Filed: 1936-07-23
Abstract: 471,449. Buoyant swimming-appliances. HOWLAND, T. J. July 23, 1936, No. 20418. Convention date, July 25, 1935. [Class 77] Substantially parallel, flexible, inflatable floats 10, 10<1> are joined by a flat member 11 to support the swimmer's chest, and by a flexible member 17 to support the swimmer's legs somewhere in the neighbourhood of the knees. In the form shown, the floats 10, 10<1> have non-inflatable sections 23. 23<1> which enable the floats to bend readily when the swimmer's legs are kicked up and down. An additional float 16 may be provided in the connecting member 11. The member 17 is adjustable in length and in its position on the floats 10, 10<1>.
Patent GB-150893-A (GB)
Title: Improvements in and connected with artificial limbs
IPC: A61F2/58
Filed: 1919-08-20
Abstract: 150,893. Brett, T. K. Aug. 20, 1919. Limbs, artificial.-Comprises a combination of parts forming means for readily attaching and disconnecting tools to and from artificial arms. Each tool is screwed into a block p of rectangular cross-section having holes or slots p in each surface. The block engages slidably with a rectangular hole in the boss of a fitting b attached to the end of the arm. By rotating a spring pin h, the curved lateral arm i thereon may be engaged with or freed from the camsurface g formed on the boss of the fitting b. thus disengaging or engaging the plunger n on the pin with the holes or slots in the block as the case may be.
Patent GB-1485072-A (GB)
Title: Filter elements
IPC: B01D46/52
Filed: 1975-05-15
Abstract: 1485072 Air filter element AUTOMOTIVE PRODUCTS Ltd 12 April 1976 [15 May 1975] 20494/75 Heading BIT An air filter element suitable for use in an I.C. engine comprises a corrugated sheet 17 of filter paper mounted in a frame element 16 to form a generally flat panel, the space between corrugated edge portions of the filter material and the frame being filled by strip 21 of a flexible preformed foamed plastics material. Suitably, all four of the sides of the filter material sheet may be so sealed to the frame. The sealing strip may be attached to the frame and to the filter material by adhesive. The sealing strip may extend beyond the frame to provide a portion 22 to seal the filter element in a mounting casing. The foam plastics material may be of the closed cell type, i.e. impervious to air, to provide a true seal or it may have a fine open cell structure and perform a filtering function.
Patent GB-1460926-A (GB)
Title: Method and device for heating water by means of a heat pump
IPC: E04H4/00
Filed: 1974-05-09
Abstract: 1460926 Swimming pools &c W FRIEDEL 9 May 1974 [12 May 1973] 20498/74 Heading A4N [Also in Division F4] A zone 2 of a volume of water 1, e.g. a lake, swimming pool, sea or river, is heated by means of a heat pump 4 which removes thermal energy from the water outside the zone and supplies thermal energy to water in the zone. As shown, the zone 2 is defined by a partition 3 which remains buoyant in a vertical position and which extends down from the surface to a predetermined depth. The partition may comprise two spaced walls 3a, 3'a fastened to brackets 3b attached to a rope 5 supported by floats 5a. In operation, cold water from the water outside the zone is taken through a pipe 1a to the evaporator of the heat pump and then returned through a pipe 1b. Water to be heated is taken through a pipe 2a to the condenser and is returned to the zone 2 through a pipe 2b.
Patent GB-593078-A (GB)
Title: Improvements in or relating to friction clutch or brake devices
IPC: F16D25/04
Filed: 1944-10-23
Abstract: 593,078. Friction clutches. CROFT, A. Oct. 23, 1944, Nos. 20512 and 20513. FClass 80(ii)] [Also in Group XXXIV] In a friction clutch or brake of the kind in which segmental shoes 7, carried in an annular trough 11 in one member 4, are urged radially inwards (or outwards) into frictional engagement with a surface 3 of the other member 1, by applying fluid-pressure through a conduit 14 to the interior of a continuous or segmental distensible annulus 6 of flexible material, and the ends of the shoes 7 engage torque-bars 8 extending transversely across the trough, the torque-bars 8 are of trapezoidal cross-section and the abutting end-faces of the friction shoes 7 are correspondingly inclined to ensure free radial movement of the shoes into the engaging position. The ends of the torquebars 8 are trunnioned in the side-walls of the trough 11 and the bars may have a reduced mid-section on the non-driving side (Fig. 5, not shown), to permit circumferential resilience. The shoes are interlocked axially with the distensible annulus 6 by a radial. tongue-and-groove connection 18 and can move axially in the trough to a limited extent against the resilience of the annulus, which latter has axially projecting ribs 17 engaging the side-walls of the trough, and may have recesses, grooves or pockets to increase its resilience. Blade-springs 18a, supported freely on the torque-bars 8, act on the adjacent overhanging ends 19a of the shoes 7 to disengage them.
Patent GB-831665-A (GB)
Title: Improvements in or relating to hay tedders
IPC: A01D80/00
Filed: 1957-06-29
Abstract: 831,665. Hay-tedders. JONES, D. T., and JONES, G. July 8, 1958 [June 29, 1957], No. 20601/67. Class 6(3). A hay-tedder comprises a main frame 10 having a rotary reel 12 mounted therein and driven from the power take-off of the towing vehicle (not shown), a curved shield 23 for deflecting rearwardly crop picked up by the reel, two main ground-wheels 23, 24 swivelly mounted one at each end of the frame for supporting it in working, an auxiliary wheel at one end of the frame for additionally supporting it in transport, the auxiliary wheel being movable to an off-the-ground position, and a towing-bar which is alternatively attachable to the front and one end of the frame for working and transport respectively. The ground-wheels 23, 24, are vertically adjustable by screwed inter-telescoping sleeves 36, 39 movable by capstans 37 and can be fixed in various angular positions by pins passed through registering holes in members 40, 43. The towing bar 44 is bifurcated and can be attached to the wheel-fork 32 or to brackets 47. The wheel 25 is freely swivellable and is attached to an arm 28 which can be swung about a horizontal axis 30 to an inoperative position.
Patent GB-1190611-A (GB)
Title: Automatically Controlled Mixer Discharge System.
IPC: B22C5/04
Filed: 1967-05-04
Abstract: 1.190,611. Mixers; discharging; mulling machines. NATIONAL ENG. CO OF CANADA Ltd. 4 May, 1967 [4 May, 1966], No. 20669/67. Headings B1C and B2A. [Also in Division G3] An automatically controlled mixer discharge system comprises a mixing chamber having a discharge opening and a power driven mixing head, a discharge door operatively associated with the opening, and control means responsive to the quantity . of material in said chamber for moving said door to control the discharge flow rate of material from said chamber. As shown, a known mixer comprises communicating chambers 12, 14 having contrarotating mixing heads 38, 42 driven by a common a.c. motor 58, and is provided with a discharge opening having a door 22 moveable between fully open and fully closed positions, this movement being effected by a pneumatic cylinder 28 in response to control signals representative of the quantity of material in the chambers 12, 14. These signals are derived from a control system including a contactmaking meter 114 which measures the power taken by the motor 58. In operation, when the load on the motor 58 reaches a low level determined by the setting of a pointer 118 on the meter 115, a solenoid valve 82 is actuated to admit compressed air into the cylinder 28 so that the door 22 is moved to the closed position; when the load on the motor reaches a high level, determined by the setting of pointer 116, valve 82 is de-energised and a valve 78 is energised so that the door 22 is moved towards the fully open position. The movement of the discharge door is thus automatically controlled in response to the power supplied to the motor 58 so that an optimum quantity of material is maintained in the chambers 12, 14 during the mixing process. The control system may include a manual over-ride, together with operating relays and indicating lamps, and suitable arrangements for the electrical and pneumatic circuits are described with reference to Figs. 3 and 4 (not shown).
Patent GB-1426569-A (GB)
Title: Temperature responsive device
IPC: G01K1/20
Filed: 1973-05-02
Abstract: 1426569 Measuring body temperature electrically JAC Inc 2 May 1973 20741/73 Heading G1N A device for indicating abnormal health conditions in an animal as a function of body temperature where the temperature of a healthy animal varies with ambient temperature as shown in Fig. 5, comprises a first thermistor 24, 52 located in the ear 22 of the animal, a second thermistor 84 responsive to ambient temperature and connected in a bridge circuit with the first thermistor 52 and resistors 46, 48, 50, 54, 56, 58, a differential amplifier formed by transistors 60, 62 being connected across the bridge output nodes 68, 70, the valves of resistors 56, 58 being chosen to provide the required slope for the ambient temperature compensation, thus as ambient temperature increases, the resistance of the first thermistor 52 decreases due to a corresponding increase in body temperature, thereby causing an imbalance in the bridge circuit, as does the resistance of thermistor 84 so that diode 88 is forward biased whereby the resistance 58 is placed in parallel with thermistor 84 to rebalance the bridge, however when thermistor 52 experiences abnormally high body temperature due to infection or disease the resistance of thermistor 52 decreases thereby biasing the base of transistor 62 positive causing if to conduct which acts through transistors 72 and 74 to actuate audio alarm 82 or the analogue signal may be fed to a chart recorder or digital read-out equipment.
Patent GB-915165-A (GB)
Title: Semiconductors
IPC: H01L21/04
Filed: 1960-06-14
Abstract: 915,165. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. June 14, 1960 [June 19, 1959], No. 20792/60. Class 37. A silicon carbide crystal to be doped with an impurity material is heated while subjected to the impurity material and maintained in the presence of a material capable of suppressing decomposition of the crystal. Fig. 1 shows a doped silicon carbide single crystal 10 in which a junction is to be provided, placed in a mass 12 of a silicon and carbon-containing material disposed in a furnace 13. The mass can be silicon carbide granules or powder or a mixture of silicon and carbon or silicon and silicon carbide, compressed to a shaped mass. Diffusion takes place along the space 14. The furnace 13 surrounding the mass 12 is provided with heaters 22 so disposed that mass 12 is hotter than the crystal so that a vapour of silicon carbide surrounds crystal 10 to prevent its decomposition. Crystal growth may be minimized by tilting the crystal. The impurity 31, in this case aluminium in a boron nitride container, is heated by a source 26 and has a carrier gas, for example argon or helium, passed over it so as to carry an atmosphere of aluminium into the area around the mass 12. This gas diffuses through thin end portion 12a and diffuses into the crystal. The silicon carbide crystal is at the diffusion temperature of 1400-2000 C. The aluminium is melted to provide its vapour and held at 1200-1600 C. The impurity may be incorporated in mass 12 but this makes separate control of its temperature impossible. Doping materials referred to are from Groups IIIA and VA of the Periodic Table and include boron, aluminium, gallium, indium, phosphorous, nitrogen, arsenic, antimony and some of their compounds. Fig. 2 shows a solid to solid diffusion process in which a thin wafer 40 of an alloy including the doping material is placed on the silicon crystal 41 and heated in the presence of a high-pressure inert atmosphere to a temperature as high as 2400  C. This high pressure retards the decomposition of silicon carbide. As soon as the wafer is alloyed the temperature is lowered to the diffusion temperature. The alloy itself must not diffuse into the crystal. Suitable compositions are tungsten, phosphorus and silicon, platinum boron and silicon, platinum, aluminium and silicon and platinum, antimony and silicon. In the embodiment shown in Fig. 3 the crystal 59 is in a closed container 60 which is pervious to the atmosphere from a melt 56 and is heated by heater 58. The melt includes silicon to provide a vapour to delay decomposition, the diffusing impurity and, if necessary, a material to characterize the melt with a suitable melting-point. A siliconaluminium-germanium mixture is referred to as one other material.
Patent GB-578610-A (GB)
Title: Improvements relating to fluid-actuated control mechanisms
IPC: G05D9/04
Filed: 1943-12-14
Abstract: 578,610. Fluid-pressure servomotorcontrol systems. TRIST & CO., Ltd., R., and DIMOND, I. H. Dec. 14, 1943, No. 20951. [Class 135] In a regulating system in which the controlled member is operated by a piston 7, Fig. 1, loaded by a spring or weighted lever and moving in a cylinder provided with ports for the supply and exhaust of pressure fluid, a valve 15 subject to a variable controlling condition and situated in'either the supply or exhaust line is formed with a tapered end 19, Fig. 3, a stem 20 of constant cross-sectional area, and a part, e.g., shoulder 21, which serves to.prevent completely the flow of pressure fluid through the valve orifice 17. The tapered end 19 gives a straight line regulation in accordance with the variable condition, and the stem 20 will allow a fixed minimum actuation of the controlled member before it is finally shut down by closure of the orifice 17 by the shoulder 21. The invention is shown applied to the actuation of a valve 3a controlling the flow of sugar juice to an evaporator 1. As the level of liquid in the evaporator varies, a float 5 varies the setting of valve 15 in the exhaust line 13 leading from the servocylinder 8. Compressed air is fed to the cylinder 8 past a reducing valve 12 and, finally, it flows past valve 15 into the top of the evaporator. The control valve 15 may be placed in the supply pipe to the cylinder. The piston may actuate a rheostat instead of a valve.
Patent GB-688860-A (GB)
Title: A system for the reproduction of sound from a sound-film track
IPC: G11B7/00
Filed: 1950-08-24
Abstract: 688,860. Optical sound reproducing. FARSBENDER, J., MOGLICH, F., and ROMPE, R. Aug. 24, 1950, No. 20963/50. Class 40 (ii) [Also in Group XL(b)] In an arrangement for reproducing sound from a film sound track, comprising an optical projection system for directing a beam of light modulated by the track, the photo-electric cell is as described in Specification 678,337, [Group XL(b)], and has vaporized electrodes forming an active gap, of width less than 0.5 mm., on which the light beam passing through the film is focussed. As shown the beam from a lamp 7 is projected by a lens 8 on to the track of the film 9 and focussed by a lens 10 on to the narrow gap between the electrodes 2 of the cell 1. A cylindrical lens 11 is included to enlarge the beam to the length the gap in the direction at right angles to its width, indicated in Fig. 3 (not shown).